8720949801 has 4 divisors (see below), whose sum is σ = 11627933072. Its totient is φ = 5813966532.

The previous prime is 8720949779. The next prime is 8720949817. The reversal of 8720949801 is 1089490278.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8720949801 - 2¹⁰ = 8720948777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8720949101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1453491631 + ... + 1453491636.

It is an arithmetic number, because the mean of its divisors is an integer number (2906983268).

Almost surely, 2^8720949801 is an apocalyptic number.

It is an amenable number.

8720949801 is a deficient number, since it is larger than the sum of its proper divisors (2906983271).

8720949801 is a wasteful number, since it uses less digits than its factorization.

8720949801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2906983270.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 8720949801 is about 93386.0257265508. The cubic root of 8720949801 is about 2058.3596613583.

The spelling of 8720949801 in words is "eight billion, seven hundred twenty million, nine hundred forty-nine thousand, eight hundred one".